snippet143.java

Eclipse JAVA开发软件中SWT各控件范例源码

/*******************************************************************************
 * Copyright (c) 2000, 2005 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.snippets;
  
/*
 * Tray example snippet: place an icon with a popup menu on the system tray
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 * 
 * @since 3.0
 */
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;

public class Snippet143 {

public static void main(String[] args) {
	Display display = new Display ();
	Shell shell = new Shell (display);
	Image image = new Image (display, 16, 16);
	final Tray tray = display.getSystemTray ();
	if (tray == null) {
		System.out.println ("The system tray is not available");
	} else {
		final TrayItem item = new TrayItem (tray, SWT.NONE);
		item.setToolTipText("SWT TrayItem");
		item.addListener (SWT.Show, new Listener () {
			public void handleEvent (Event event) {
				System.out.println("show");
			}
		});
		item.addListener (SWT.Hide, new Listener () {
			public void handleEvent (Event event) {
				System.out.println("hide");
			}
		});
		item.addListener (SWT.Selection, new Listener () {
			public void handleEvent (Event event) {
				System.out.println("selection");
			}
		});
		item.addListener (SWT.DefaultSelection, new Listener () {
			public void handleEvent (Event event) {
				System.out.println("default selection");
			}
		});
		final Menu menu = new Menu (shell, SWT.POP_UP);
		for (int i = 0; i < 8; i++) {
			MenuItem mi = new MenuItem (menu, SWT.PUSH);
			mi.setText ("Item" + i);
			mi.addListener (SWT.Selection, new Listener () {
				public void handleEvent (Event event) {
					System.out.println("selection " + event.widget);
				}
			});
			if (i == 0) menu.setDefaultItem(mi);
		}
		item.addListener (SWT.MenuDetect, new Listener () {
			public void handleEvent (Event event) {
				menu.setVisible (true);
			}
		});
		item.setImage (image);
	}
	shell.setBounds(50, 50, 300, 200);
	shell.open ();
	while (!shell.isDisposed ()) {
		if (!display.readAndDispatch ()) display.sleep ();
	}
	image.dispose ();
	display.dispose ();
}
}